[15] Philosophie des Schönen (Part ii. of Ästh.), Leipzig, 1890, pp. 463-464; cf. Deutsche Ästh. s. K. pp. 357-362.
[16] Phil. d. Sch. pp. 434-437.
[17] Op. cit. pp. 115-116.
[18] Op. cit. pp. 197-198.
[19] Op. cit. pp. 150-152.
[20] Ch. Levêque, La Science du beau, Paris, 1862.
[21] E. Saisset, L'Esthétique française (in app. to vol. L'Âme et la vie, Paris, 1864), pp. 118-120.
[22] In Revue philosophique, vols. i. ii. x. xii. xvi.
[23] J. Ruskin, Modern Painters (4th ed., London, 1891); cf. De la Sizeranne, pp. 112-278.
[24] Vito Fornari, Arte del dire, Naples, 1866—1872; cf. vol. iv.